CN204991185U

CN204991185U - Communication cable for aerospace

Info

Publication number: CN204991185U
Application number: CN201520331303.1U
Authority: CN
Inventors: 裴清春; 郭庆严
Original assignee: Sichuan Jiuzhou Wire and Cable Co Ltd
Current assignee: Sichuan Jiuzhou Wire and Cable Co Ltd
Priority date: 2015-05-21
Filing date: 2015-05-21
Publication date: 2016-01-20
Anticipated expiration: 2025-05-21

Abstract

The utility model discloses a communication cable for aerospace, including conductor, insulating layer, shielding layer and the restrictive coating of arranging in proper order from inside to outside, characterized by: the insulating layer is the composite insulation layer who comprises the inner insulating layer and external insulation layer, and wherein, it is that the polytetrafluoroethylene area is around the covering around covering, external insulation layer that the inner insulating layer is micropore polytetrafluoroethylene area. The utility model has the characteristics of transmission signal decay is low, light in weight, external diameter are little, with low costs, performance safe and reliable, practicality are strong etc.

Description

A kind of Aero-Space telecommunication cable

Technical field

The utility model belongs to electric wire, and relate to a kind of Aero-Space telecommunication cable, this telecommunication cable is specially adapted in aerospace field, as the connecting line of the communication signal transmissions between communication equipment, is the improvement of prior art.

Background technology

Along with the fast development of Aero-Space cause, the continuous expansion of space exploration scope, Science Research Project going deep into gradually, Aero-Space are to the own wt of airborne equipment, and form the weight of electronic component (comprising electric wire) of payload and the useful space is all had higher requirement, therefore, alleviate the weight of cable, reduce the development need that the signal attenuation of cable under same frequency during signal transmission is current fluoroplastic cable.

In the prior art, Aero-Space telecommunication cable: be disposed in order from inside to outside be coated with insulating barrier respectively and twist together two with multiply silver-coated copper wire stranded conductor, inner restrictive coating, screen and external sheath layer composition; Described insulating barrier is fluoroplastic tape lapping layer or polyimides fluoroplastics lapping layer or extrudes fluoroplastic insulation layer.The defect existed is: because fluoroplastics are because density is large, dielectric constant is comparatively large, therefore cable weight is heavy, external diameter is large, and the signal transmission decay of cable is also relatively large.

Summary of the invention

The purpose of this utility model is intended to overcome above-mentioned deficiency of the prior art, signal transmission decay is little, the outside diameter of cable is little, lightweight aerospace communications cable to provide one to have, and this low attenuation communication cable can be widely used in the transmission of more than 0.3MHz signal code.

Content of the present utility model is: a kind of Aero-Space telecommunication cable, comprise the conductor, insulating barrier, screen and the restrictive coating that are disposed in order from inside to outside, it is characterized in that: the composite insulation layer that described insulating barrier is made up of inner insulating layer and external insulation layer, wherein, inner insulating layer is expanded microporous polytetra fluoroethylene-EPTEE band lapping layer, and external insulation layer is teflin tape lapping layer.

In content of the present utility model: described conductor is with the stranded conductor of 7 strands of silver-coated copper wires.

In content of the present utility model: the composite jacket layer that described restrictive coating is made up of inner restrictive coating and external sheath layer, wherein, inner restrictive coating is expanded microporous polytetra fluoroethylene-EPTEE band lapping layer, and external sheath layer is polytetrafluoroethylene extrusion molding layer.

In content of the present utility model: described screen is wire sheathing, this screen is between inner/outer sheath layer.

In content of the present utility model: this cable is two core cable, have two cores, each core is made up of conductor and the insulating barrier being coated on conductor periphery, and two stranded rear formation cable cores of core, described screen, restrictive coating are coated on cable core periphery.

Compared with prior art, the beneficial effects of the utility model are: what (1) adopted due to inner insulating layer is the expanded microporous polytetra fluoroethylene-EPTEE band that the low and density of dielectric constant is little, therefore the dielectric loss of cable insulation when effectively can reduce space equipment Signal transmissions, improve the quality of space equipment signal transmission matter in the cable; (2) due to inner insulating layer employing is the expanded microporous polytetra fluoroethylene-EPTEE band that dielectric constant is low and density is little, therefore the external diameter of the insulating barrier of cable can be reduced when the impedance of cable electrical parameter characteristic is constant, thus reduce the entire outer diameter of telecommunication cable, the weight of cable can be reduced simultaneously; (3) due to insulating outer layer employing is the teflin tape that machinery and electric property are high, therefore increases the mechanical and physical performance of insulating barrier, thus improves telecommunication cable mechanical and physical performance.

(3) the utility model product preparation process is simple, and cost is low, practical.

Accompanying drawing explanation

Fig. 1 is the structural representation of the utility model embodiment;

Fig. 2 is the cross section structure schematic diagram of Fig. 1.

In figure: 1-conductor, 2-inner insulating layer, 3-external insulation layer, 4-inner restrictive coating, 5-screen, 6-external sheath layer.

Embodiment

Below in conjunction with accompanying drawing, the utility model will be further described, see each accompanying drawing.

A kind of Aero-Space telecommunication cable, comprise the conductor 1, insulating barrier, screen 5 and the restrictive coating that are disposed in order from inside to outside, described conductor 1 is with the stranded conductor of 7 strands of silver-coated copper wires, described insulating barrier is by inner insulating layer 2 and external insulation 3 layers of composite insulation layer formed, wherein, inner insulating layer 2 is expanded microporous polytetra fluoroethylene-EPTEE band lapping layers, and external insulation layer 3 is teflin tape lapping layers.

The composite jacket layer that described restrictive coating is made up of inner restrictive coating 4 and external sheath layer 6, wherein, inner restrictive coating 4 is expanded microporous polytetra fluoroethylene-EPTEE band lapping layers, and oversheath 6 layers is polytetrafluoroethylene extrusion molding layer.

Described screen 5 is wire sheathings, and this screen is between inner/outer sheath layer.This cable is two core cable, there are two cores, each core is made up of conductor 1 and the inner insulating layer 2 and external insulation layer 3 being coated on conductor 1 periphery, and two stranded rear formation cable cores of core, described inner restrictive coating 4, screen 5 and external sheath layer 6 are coated on cable core periphery.

Described material in the utility model content and above-described embodiment is existing commercially available material.

The concrete same prior art of technology contents described in the utility model content and above-described embodiment.

The utility model is not limited to above-described embodiment, all can implement and have described good result described in the utility model content.

Claims

1. an Aero-Space telecommunication cable, comprise the conductor, insulating barrier, screen and the restrictive coating that are disposed in order from inside to outside, it is characterized in that: the composite insulation layer that described insulating barrier is made up of inner insulating layer and external insulation layer, wherein, inner insulating layer is expanded microporous polytetra fluoroethylene-EPTEE band lapping layer, and external insulation layer is teflin tape lapping layer.

2. Aero-Space telecommunication cable according to claim 1, is characterized in that: described conductor is with the stranded conductor of 7 strands of silver-coated copper wires.

3. Aero-Space telecommunication cable according to claim 1, it is characterized in that: the composite jacket layer that described restrictive coating is made up of inner restrictive coating and external sheath layer, wherein, inner restrictive coating is expanded microporous polytetra fluoroethylene-EPTEE band lapping layer, and external sheath layer is polytetrafluoroethylene extrusion molding layer.

4. Aero-Space telecommunication cable according to claim 1, it is characterized in that: described screen is wire sheathing, this screen is between inner/outer sheath layer.

5. Aero-Space telecommunication cable according to claim 1, it is characterized in that: this cable is two core cable, there are two cores, each core is made up of conductor and the insulating barrier being coated on conductor periphery, two stranded rear formation cable cores of core, described screen, restrictive coating are coated on cable core periphery.